Bracket-support for dental engines.



0. H. PIEPER.

BRACKET SUPPORT FOR DENTAL ENGINES.

APPLICATION FILED SEPT.15, 1911.

Patented Feb. 25, 1913.

fly-4 11,114 6] Hot ne xr wdweooeo I /%1%/U f5 OSCAR H. PIEPER, OFROCHESTER, NEW YORK.

BRACKET-SUPPORT FOR DENTAL ENGINES.

Specification of Letters Patent.

Patented Feb. 25, 1913.

Application filed September 15 1911. Serial 110..649539.

To all whom it may concern Be it known that I, OSCAR H. Prensa, ofRochester, in the county of Monroe and State of NewYork, have inventedcertain new and useful Improvements in Bracket- Supports for DentalEngines; and I do hereby declare the following to be a full, clear, andexact description of the same, reference being had to the accompanyingdrawings, forming a part of this specification, and to thereference-numerals marked thereon.

The present invention relates to improvements in dental engines, beingespecially adaptable for use in connection with a mechanism of the typewhich embodies a wall bracket arranged for swinging movement about avertical axis, and constituting a. mounting for a motor and hand piecefor the various implements and tools to be used, and it has for itsobject to provide a novel means for elevating and lowering the motor andhand piece to accommodate the different needs of the operator.

A further object of the invent-ion is to enable the motor and hand pieceto be support: ed on an arm which may or may not be extensible, asdesired, and which is, at the same time, capable of being bodily raisedor low ered to change the position of the motor and hand piece.

Still another objectof my invention is the provision of an improvedconstruction for balancing the motor and hand piece in any one of itsadjusted positions.

To these and other ends the invention consists in certain improvementsand combinations of parts all as will be hereinafter more fullydescribed, the novel features being pointed out in the claims at the endof the specification.

In the drawings Figure 1 is a view in side elevation, with parts brokenaway, illustrating a dental engine bracket embodying the features of mypresent invention: Fig. 2 is a sectional view on the line a'a of Fig. 1:Fig. 3 is a detail view in elevation of a portion of the carriage, andFig. 4 is a detail View in elevation, with parts broken away, of amodified form of the invention.

Similar reference numerals throughout the several figures indicatesimilar arts.

In the present construction, Wl'llCh illustrates a preferred embodimentof my inven-' tion, there is provided a bracket, pivotally mounted onthe supports 1, so as to swing about a vertical axis, said bracketincluding a guide 2, preferably in the form of an I- beam, as shown.Arranged for vertical movement on the guide 2 is a carriage, whichembodies a lower member 3, upper 4 and connecting pieces 5 secured tothe upp an lewer mem ers, sp i e y, nd Pr ly t rmcd as sh n n h d a ingThe upper and lower members of the carriage are provided withanti-friction tellers 6 whichengage the opposite edges of the guide.

Mounted on the lower member 3 is the supportin arm for the motor andhand piece pre erablyembodying the telescoping mem rs 7 and 8, a thumbscrew 9 being provided to secure the supporting arm in desired adjustedposition. The motor is designated at 10, and the hand piece at 11, thesebeing suspended on the cable 12 which preferably extends through thesupporting arm, the latter being hollow for this purpose, and carriesthe wiringfor the motor. The supporting arm may be strengthened, as inthe present embodiment, by means of a bracing member which embodiestelescoping parts 13 and 14 which arepivotally con-. nected,respectively, to the upper member 4 of the carriage and to thetelescopin member 8 of the supporting arm; the racing member being heldin adjusted position by means of the thumb screw 15.

The carriage on which the supporting arm is'mounted may be balanced inany suitable manner, and to this end, in the present embodiment, thereis provided a cable 16 connected to the upper member i of the carriageand carrying a counter-balancing weight 17 at its lower end, the cablebeing suitably guided by pulley 18 which is arranged at the top of thebracket.

In a modified form of the invention, as shown in Fig. 4, I may constructthe supporting arm of a single piece, as indicated at 19, connectionbeing had with the upper member of the carriage by means of the bracingmember 20.

While I have shown and described the invention in its preferredembodiments, it is to be understood that I am not limited to theparticular form and arrangements of parts herein disclosed, theinvention being susceptible of other departures and changes, ascomprehended by the claims hereinafter following.

I claimas my invention:

7 1. In a dental engine, the combination with a motor and hand piece,oil a vertically ment on said guide, and a counter-balance for holdingthe supporting arm in adjusted position.

2. In a dental engine, the. combination with a motor and hand-piece, oata vertically disposed guide, a'carriage movable on said guide, asupporting arm for the motor and handpiece mounted on the aforementionedcarriage, and a counterbalance connected to the carriage.

3. lln a dental engine, the combination with a motor and hand-piece, ofa vertically movable carriage, a supporting arm tor the motor andhandpiece mountedon the aforementioned carriage, and a bracing memberconnecting the carriage and the supporting nooaoae lln a dental engine,the combination With a motor and handpiece, of a vertically movablecarriage, an extensible supporting arm for the motor and handpiecemounted on the aforementioned carriage, anda rigid extensible bracingmember connecting the carriage and the extensible supporting arm.

5. In a dental engine, the combination with a bracket pivoted on avertical axis, of a guide supported on the bracket, a' carriage movableon said guide, a motor and hand piece, an extensible supporting arm forthe motor and hand piece mounted on the carriage, and a rigid extensiblebracing member connecting the carriage and the supporting ar @SOAR H.PlEPlEIEt. Witnesses:

R. L. Freon,

